List of practice Questions

Which one of the following oscillators is used for generation of high frequencies?
A 741-type op-amp has a gain bandwidth product of 1 MHz. A non-inverting amplifier using this op-amp and having a voltage gain of 20 dB will exhibit a 3 dB bandwidth of:
What is the order of minimum displacement that can be measured with a capacitive transducer?
Capacitive transducers are normally used for:
To reduce the effect of fringing in a capacitive type transducer,
Piezoelectric transducers are:
Psychrometer is used for the measurement of:
If the differential voltage gain and the common mode voltage gain of the differential amplifier are 48 dB and 2 dB respectively, then its common mode rejection ratio is:
A variable reluctance type tachometer has 60 rotor slots. If the counter records 3600 counts per second, then the speed is:
A force digital transducer measures the pressure in the range of 0-200 N with a resolution of 0.1% of full scale. The smallest charge it can measure is:
Value of pH solution is 4. It indicates that the concentration of hydrogen ions is:
Which of the following is used to measure the thermal conductivity?
The resistance of the thermistor is 5000 $\Omega$ at 20°C and its resistance temperature coefficient is 0.04°C. A measurement with a lead resistance of 10 $\Omega$ will cause an error of:
Which of the following is an inverse transducer?
The input impedance of CRO is nearly:
The principle of operation of LVDT is based on the operation of:
The devices which are used for the measurement of very high temperature are:
An example of variable area device for measuring flow is:
In a venturimeter, the flow is 0.15 m$^3$/s when the differential pressure is 30 kN/m$^2$. What is the flow when the differential pressure is 60 kN/m$^2$?
Gauge factor of strain gauge indicates its:
Dummy strain gauge is used:
The gauge factor of semiconductor strain gauge is in the range of:
The gauge factor of semiconductor strain gauge is higher than ordinary metal wire resistive strain gauge because of:
If \( i = \sqrt{-1} \), then \[ \sum_{n=2}^{30} i^n + \sum_{n=30}^{65} i^{n+3} = \]
Who is the author of the book "The Discovery of India"?